/*
 * Copyright 2002-2004 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.rules.constraint;

import org.springframework.core.enums.StringCodedLabeledEnum;

/**
 * @author Keith Donald
 */
public abstract class Operator extends StringCodedLabeledEnum {

	protected Operator(String code, String symbol) {
		super(code, symbol);
	}

	public String getSymbol() {
		return getLabel();
	}

	public Operator negation() {
		return null;
	}
	
	public String toString() {
		return getSymbol();
	}
}
